CURA 3.6 not sliccing correctly (?) { Ultimaker 2+ }

[tomii 0]

So, I've upgraded from 3.4 to 3.6.  And now parts don't print worth a hoot.  I've attached a file that previously printed just fine - the old gcode still prints fine, but I needed to make a slight modification to the model for the final piece.  If I slice with CURA 3.6, it just does retched things - hair everywhere, it looks like it's getting lost in the X (or Y?) axis, big blobs of schmutz - no fine details.  Pretty sure I have the settings set pretty close to what I had before (except maybe for retraction prime distance - it doesn't really let me tweak that acceptably).

 

Thing is, if I slice the model in Simplify3D, it works pretty good.  I've attached a couple of STLs and gcode (from both S3D and C3.6) that I'm currently working with, and seem to be affected by this issue.  Some help/insights would be appreciated.  In the meantime, I may switch back to 3.4 or 5 to get things sorted out.  Not sure.

S3D_SlottedStem.gcode

UM2_SlottedStem.gcode

Base.STL

SlottedStem.STL

[burtoogle 513]

Hello @tomii, yes, it's gone badly wrong hasn't it. There appears to be great chunks of wall missing.

 

I can slice that model using my (modified) Cura and it looks a lot better. Have you tried the 4.0 beta? Perhaps that is better than 3.6?

 

Your gcode looks like this:

 

 

My gcode (with support added) looks like this:

 

 

I attach my gcode which is created from your model and profile with support added.

 

UM2_SlottedStem-mb.gcode